/**
 * Copyright (c) <2010>, <SUNNY GUPTA>
 * All rights reserved.

 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of the <ORGANIZATION> nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <SUNNY GUPTA> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.gwtp.investmentadvisor.server.entities.finance;

import java.math.BigDecimal;
import java.util.Currency;

import com.gwtp.investmentadvisor.server.externaldataservices.exception.CurrencyMismatchException;

/**
 * 
 * @author sunny
 *
 */
public class FinancialEntry {
  private FinancialAccount account;
  private FinancialSecurity security;
  private BigDecimal quantity;
  private FinancialAmount unitPrice;
  private FinancialCategory category;
  
  /**
   * For Objectify.
   */
  @SuppressWarnings("unused")
  private FinancialEntry() {
  }
  
  public FinancialEntry(FinancialAccount account, FinancialAmount unitPrice, BigDecimal quantity) throws CurrencyMismatchException {
    this.account = account;
    this.unitPrice = unitPrice;
    this.quantity = quantity;
    
    // Check currency
    validateCurrency(this.unitPrice, this.account);
  }
  
  public BigDecimal getQuantity() {
    return this.quantity;
  }

  public void setQuantity(BigDecimal quantity) {
    this.quantity = quantity;
  }

  public FinancialAmount getUnitPrice() {
    return this.unitPrice;
  }

  public void setUnitPrice(FinancialAmount unitPrice) throws CurrencyMismatchException {
    // Check currency
    validateCurrency(unitPrice, this.account);
    
    this.unitPrice = unitPrice;
  }
  
  public FinancialAmount getResultantAmount() {
    BigDecimal amount = unitPrice.getValue().multiply(quantity);
    return new FinancialAmount(unitPrice.getCurrency(), amount);
  }

  public void setAccount(FinancialAccount account) throws CurrencyMismatchException {
    // Check currency
    validateCurrency(this.unitPrice, account);
    
    this.account = account;
  }

  /**
   * @param unitPrice
   * @param account
   * @throws CurrencyMismatchException 
   */
  private void validateCurrency(FinancialAmount unitPrice,
      FinancialAccount account) throws CurrencyMismatchException {
    if (unitPrice == null || account == null) {
      // TODO Think about some parameters to clarify
      throw new CurrencyMismatchException();
    } else {
      if (!unitPrice.getCurrency().equals(account.getCurrency())) {
        // TODO Think about some parameters to clarify
        throw new CurrencyMismatchException();
      }
    }
  }

  public FinancialAccount getAccount() {
    return account;
  }

  public void setSecurity(FinancialSecurity security) {
    this.security = security;
  }

  public FinancialSecurity getSecurity() {
    return security;
  }

  public void setCategory(FinancialCategory category) {
    this.category = category;
  }

  public FinancialCategory getCategory() {
    return category;
  }
  
  /* (non-Javadoc)
   * @see java.lang.Object#equals(java.lang.Object)
   */
  @Override
  public boolean equals(Object arg0) {
    // TODO Auto-generated method stub
    return super.equals(arg0);
  }
  
  /* (non-Javadoc)
   * @see java.lang.Object#hashCode()
   */
  @Override
  public int hashCode() {
    // TODO Auto-generated method stub
    return super.hashCode();
  }

  /**
   * @return
   */
  public Currency getCurrency() {
    return unitPrice.getCurrency();
  }
}
